2005 Dodge Ram 2500 Pickup Owner Manual Diesel - Page 328

328 WHAT TO DO IN EMERGENCIES Your vehicle is equipped with two 12-volt batteries. If it becomes necessary to use a booster battery, with jumper cables, to start a vehicle's engine because its batteries are discharged, the following procedure should be followed: Set the parking brake and place an automatic transmission in PARK (or NEUTRAL for a manual transmission). Turn off lights, heater and other electrical loads. Observe charge indicator (if equipped) in both batteries. If indicator (if equipped) is light or yellow on either battery, replace that battery. CAUTION! Use the Jump Start Procedure only when the charge indicator (if equipped) in both batteries is dark in the center. Do not attempt jump starting when either battery charge indicator (if equipped) is bright or yellow. If charge indicator (if equipped) has a green dot in the center, failure to start is not due to a discharged battery and cranking system should be checked. 1. Attach one jumper cable to the positive terminal of booster battery and the other end of the same cable to the positive terminal of the discharged battery.